Tool handle



@et 22, 1935.. J. MCMENAMIN TOOL HANDLE Filed'May 24, 1934 INVENTOR: Joseph McMen/lamin WITNESSES: M 4 7% AToRNEY Patented Oct. 22, 1935 UNITED STATES PATENT OFFICE 2 Claims.

This invention relates to tool handle fastenings, and has for an object to provide means especially adaptable to a le, for securing the file lrmly in a handle.

A further object of the invention is to provide, in combination with a tool such as a le, a tang having outstanding from the surface thereof, means for engagement with the Walls of a socket in a handle.

A further object of the invention is to provide a tool such as a le having a tapered tang adapted to increase the area of parts of the socket of a handle, and provided with means for engagement with the walls of the socket for maintaining the tool and handle in combination.

A further object of the invention is to provide in combination with a tool such as a le, a tapered tang having a thread formed thereon and outstanding from the surface thereof, adapted to engage the walls of a socket formed in a handle.

The invention, therefore, comprises a tool .such as a le having a tapered tang and upon the exterior of the tang a helical thread formed outstanding therefrom adapted to cut into the material of a handle, and simultaneously enlarge parts of the handle, and also includes the formation of such a tapered tang having outstanding therefrom inclined barbs which may be introduced into the socket of a handle with comparative ease, but which will resist removal of the tool from the handle.

The drawing illustrates several embodiments of the invention and the views therein are as follows:

Figure 1 is a view of a fragment of a tool showing a tang in side elevation and a handle in section,

Figure 2 is a transverse sectional view taken on line 2-2 of 4Figure 1,

Figure 3 is a fragmentary view in elevation of a tool and a tang thereon, showing its relation to the handle, which is shown partly in section,

Figure 4 is a transverse sectional view taken on line 4-4 of Figure 3,

Figure 5 is a view in side elevation of a fragment of a tool disclosing the tang and the inclined barbs,

Figure 6 is a transverse sectional view taken on line 6 6 of Figure 5, and

Figure 7 is a view partly in elevation and partly in section of a conventional commercial type of handle. 5

Like characters of reference indicate corresponding parts throughout the several views.

While the present invention is adapted for use on different types of tools, it will, as at present seen, find its greatest utility in the matter of 10 les, and is, therefore, so disclosed, without limitation.

Considered as a ille, the tool is shown at I0, I0' and I0 of different transverse areas. Either of the types of les, as shown, may, of course, be 15 provided with either of the types of tangs, as shown. As shown at Figure 1, the tang Il is tapered, and is provided with a helical thread I2.

An already well-known commercial type of handle is represented at I3 in Figure 7, and is 20 provided with a cylinder bore or socket I4. 'I'he present type of tang is principally intended for cooperation with this type of handle, and is so shown, but, of course, it must be understood that the type of handle may vary. 25

As `shown at Figure 3, the tang Il is provided with barbs which are the same as the barbs I5, shown at Figure 5. These barbs I5, shown more particularly and clearly at Figure 5, incline toward the tool so that when driven into the handle 30 I3, as shown at Figure 3, they engage the walls of the socket into which the tang is driven and resist Withdrawal.

In the type shown at Figure 1, the tang is inserted by rotary movement, having a screw ac- 35 tion.

I claim:-

1. A tool handle fastener comprising a tapered tang formed upon the tool, a handle having a substantially cylindrical bore, and barbs 40 formed upon the exterior and inclined away from the end of the tang for penetrating the wall of the bore when forced in.

2. The combination with a tool handle embodying a substantially axial, cylindrical bore, and 45 a tapered tang having barbs outstanding from the surface and inclined away from the end thereof said tang being adapted to expand the outer end of the bore as the tang is driven therein.

A JOSEPH MCMENAMIN. 

